Maybe it's a Northern thing? Actors tend to move from show to show and these all take place in the Manchester or Liverpool area. 'The Royle Fanily' also featured the actors who played Jonny and Janet Keogh of 'Two Pints of Lager,' which also featured Bev Callard as one of the character's Liz Macdonald-type mum.

A luvly wee 'ome where Canadian fans of Coronation Street can come ter sit hammer and tack wiv a cuppa and rant and rave about the gahn ons on Corrie Street.
A word to any British fans, we are about 6 months behind on the episodes, so please don't tell us any juicey gossip like Ken Barlow and Vera Duckworth are having an affair.

A luvly wee 'ome where Canadian fans of Coronation Street can come ter sit hammer and tack wiv a cuppa and rant and rave about the gahn ons on Corrie Street.
A word to any British fans, we are about 6 months behind on the episodes, so please don't tell us any juicey gossip like Ken Barlow and Vera Duckworth are having an affair.